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The GSC Power Division +1mm exhaust valve set for 2014+ Subaru BRZ and Scion FR-S with the FA20 engine is an oversize replacement valve kit. These exhaust valves are specified at 30mm diameter with a +1mm increase and are made from 23-8N stainless alloy per the listing. Use when replacing worn valves; confirm the 2014+ FA20 application before ordering.
GSC P-D 2014+ BRZ/FRS FA20 Exhaust Valve Set +1mm (30mm) 23-8N Stainless Alloy
